A reasonable question: what purpose?
General purpose, mostly outdoor recreation.
I do not want to buy a HardHat for each
purpose.
Specific activities: hiking on steep rocky slopes,
recreational logging, mtn biking, long distance
car driving, working on my house,
general hiking = trolling for cougars.
Winter and summer use.

Do not need ANSI, OSHA or other certification;
these are a plus. I really do not know where ( if)
these rules are enforced.